PENZA STATE UNIVERSITY Penza, Russia MODELING EXPLOSIVE WELDING BY USING THE LS-DYNA SOFTWARE Speaker: as. prof. IRINA LOS

BIMETAL MATERIALS stainless steel - carbon steel titanium - steel copper- aluminium tantalum - aluminium zirconium – stainless steel stainless steel – Ni-Cr super alloy titanium - copper molybdenum – copper niobium - titanium

MATHEMATICAL SIMULATION The analysis of process and formulation of a problem The metallic material model selection The explosive model selection The choice of equations of state The determination of the geometry of parts The program design The analysis of results

MATERIAL MODELS EQUATION OF STATE The explosive model High Explosive Burn equation of state JWL (Jones – Wilkinson - Lee) The copper plates model Johnson - Cook equation of state Gruneisen The air vacuum model

DENSITY DISTRIBUTION the impact of two copper plates

KINETIC ENERGY OF FRYER PLATE

CONTOURS OF PRESSURE

CONTOURS OF EFFECTIVE STRESS

RESULTANT VELOCITY OF FRYER PLATE

EXPLOSIVE WELDING MODEL FOR COMPOSITE

DEFORMATION PROCESS MODELING

PENZA STATE UNIVERSITY Penza, Russia metal@diamond.pnzgu.ru Thank you for your attention